Finding the Fourth Proportional to 96.20, 144.18 and 74.72
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Solution
The fourth proportional to 96.20, 144.18 and 74.72 is: 111.99
Step by Step Solution
- Step 1: Write the proportion equation
96.20 : 144.18 = 74.72 : x - Step 2: Convert to fraction form
96.20/144.18 = 74.72/x - Step 3: Cross multiply
96.20x = 144.18 × 74.72 - Step 4: Simplify right side
96.20x = 10,773.13 - Step 5: Solve for x
x = 10,773.13/96.20 - Step 6: Final answer
x = 111.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.